layouts: Adjust layout-sizes to the correct aspect-ratios

and fix some other issues, to make the layouts more consistent.

The aspect-ratios of the layouts,
should now match the intended aspect-ratios (12:7 and 16:5),
with 3 decimal-digits of precision; either exactly,
or rounded to be a little more square,
so that the entire height of the panel will be used.
Adding 0.001 to `width` in the `default`-outlines of the layouts,
would make the layouts a little wider than the intended aspect-ratio.

Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/691>

data/keyboards/am_wide.yaml

@@ -4,15 +4,14 @@
 # Oct 2021
 ---
 outlines:
-    default:       { width: 51.7,   height: 42 }
-    change-view:   { width: 77.5,   height: 42 }
-    change-view-2: { width: 103.35, height: 42 }
-    large:         { width: 62.27,  height: 42 }
-    placeholder:   { width: 51.7,   height: 42 }
-    spaceline:     { width: 340.3,  height: 42 }
-    special:       { width: 62.27,  height: 42 }
-    special-2:     { width: 77.5,   height: 42 }
-    special-3:     { width: 103.35, height: 42 }
+    default:       { width: 51.692,  height: 42 }
+    change-view:   { width: 77.538,  height: 42 }
+    change-view-2: { width: 103.384, height: 42 }
+    placeholder:   { width: 51.692,  height: 42 }
+    spaceline:     { width: 361.844, height: 42 }
+    special:       { width: 51.692,  height: 42 }
+    special-2:     { width: 77.538,  height: 42 }
+    special-3:     { width: 103.384, height: 42 }
 
 views:
     base:
@@ -28,15 +27,15 @@ views:
         - "show_upper Ժ Դ Չ Յ Զ Լ Ք Խ Շ Ռ BackSpace"
         - "show_numbers preferences space . Return"
     numbers:
-        - "-- -- -- -- -- -- -- -- --"
-        - "-- ﬓ  ﬔ  ﬕ  ﬖ  ﬗ   ՟ և --"
-        - "-- , \" ' : ; ! ? --"
+        - "-- -- -- -- -- -- -- -- -- -- -- -- --"
+        - "-- -- -- ﬓ ﬔ ﬕ ﬖ ﬗ ՟ և -- -- --"
+        - "-- -- -- , \" ' : ; ! ? -- -- --"
         - "show_symbols 1 2 3 4 5 6 7 8 9 0 BackSpace"
         - "show_letters preferences space . Return"
     symbols:
-        - "* # \\ % < > = [ ]"
-        - "© $ / & - _ + ( )"
-        - "® £ € ¥ ^ ° @ { }"
+        - "-- -- * # \\ % < > = [ ] -- --"
+        - "-- -- © $ / & - _ + ( ) -- --"
+        - "-- -- ® £ € ¥ ^ ° @ { } -- --"
         - "show_numbers_from_symbols ~ ` | · √ π τ ÷ × ¶ BackSpace"
         - "show_letters preferences space . Return"
 
@@ -76,8 +75,6 @@ buttons:
             set_view: "symbols"
         outline: "change-view"
         label: "*/="
-    .:
-        outline: "large"
     space:
         outline: "spaceline"
         text: " "